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Preparation and Properties of Self-Healing Polyurethane Elastomer Derived from Tung-Oil-Based Polyphenol.
ACS Omega ( IF 3.7 ) Pub Date : 2019-12-23 , DOI: 10.1021/acsomega.9b03082
Mei Li 1, 2, 3, 4, 5 , Haiyang Ding 1, 2, 3, 4, 5 , Xiaohua Yang 1, 2, 3, 4, 5 , Lina Xu 1, 2, 3, 4, 5 , Jianling Xia 1, 2, 3, 4, 5 , Shouhai Li 1, 2, 3, 4, 5
Affiliation  

A tung-oil-based polyphenol (ATOM), containing the phenolic hydroxyl group, was synthesized from tung oil and 4-maleimidophenol by the Diels-Alder addition reaction. Then self-healing thermosetting polyurethanes were prepared from ATOM and the polyurethane prepolymer. The chemical structure and cross-link network were confirmed by Fourier transform infrared spectroscopy (FTIR) and swelling tests. The products partially dissolved in trichlorobenzene when the temperature rose to 110 °C. Temperature-variable FTIR confirmed that the phenolic urethane starts to partially dissolve at 100 °C, which can be explained by the experimental phenomenon in swelling tests. Tensile property analysis showed that the broken and healed thermosets maintained about 46-64% of their original tensile strengths and 81-88% of their original elongations at break, respectively.

中文翻译:

桐油基多酚衍生的自修复聚氨酯弹性体的制备及性能。

通过狄尔斯-阿尔德加成反应,由桐油和4-马来酰亚胺基苯酚合成含有酚羟基的桐油基多酚(ATOM)。然后由ATOM和聚氨酯预聚物制备自修复的热固性聚氨酯。化学结构和交联网络通过傅立叶变换红外光谱(FTIR)和溶胀测试确认。温度升至110°C时,产品部分溶于三氯苯。温度可变的FTIR证实酚醛聚氨酯在100°C时开始部分溶解,这可以通过溶胀试验中的实验现象来解释。拉伸性能分析表明,断裂和愈合后的热固性材料分别保持其原始拉伸强度的46-64%和断裂时原始伸长率的81-88%,
更新日期:2020-01-14
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